Are you asking if the Catera HAS one, or are you asking WHERE it
is? If you want to know whether or not it has one, simply look
under the hood for the throttle cable. If there is no throttle
cable coming from the firewall below the brake fluid reservoir to
the front of the intake manifold, than it is an electrical throttle
system; NOT a mechanical throttle (mechanical throttles have the
throttle cable). If you already knew that but you're just wondering
where the throttle actuator motor is, it is located on the side of
the throttle body. It's going to be on the same side of the
throttle with the MAF sensor located on the air intake. Hopefully
this will help out, I actually just spent a week rebuilding the
electrical throttle system on my 2005 Mustang GT. Despite the
difference in vehicles compared to yours, all electric throttle
systems are very similar. If you plan on working on your throttle
system, THERE ARE A LOT, and I MEAN A LOT, of things you need to be
sure you take into consideration BEFORE you disassemble any part of
the throttle system. If you have any more questions, feel free to
respond anytime. Oh Yeah - Failing to take into consideration the
sensitivity and procedures needed to be taken while
repairing/working on an electrical throttle system will result in
AT LEAST 1 check engine light code, as well as not being able to
drive your car whatsoever. Improper steps while servicing the
system will more than likely result in virtually NO throttle
response, well at least not enough to make your car move. Please be
careful while doing anything with such a system until you know
EXACTLY what you're doing. Not to act like a jerk of anything, but
I just don't want you to suffer what I had to these last few
days........GOOD LUCK!
